A digital total-sediment-thickness database for the world's oceans and marginal seas
has been compiled by the NOAA National Geophysical Data Center (NGDC). The data were
gridded with a grid spacing of 5 arc-minutes by 5 arc-minutes. Sediment-thickness
data were compiled from three principle sources: (i) previously published isopach
maps including Ludwig and Houtz [1979], Matthias et al. [1988], Divins and Rabinowitz
[1990], Hayes and LaBrecque [1991], and Divins [2003]; (ii) ocean drilling results,
both from the Ocean Drilling Program (ODP) and the Deep Sea Drilling Project (DSDP);
and (iii) seismic reflection profiles archived at NGDC as well as seismic data and
isopach maps available as part of the IOC's International Geological-Geophysical Atlas
of the Pacific Ocean [Udinstev, 2003].